Steam apparatus.



0. P. OSTERGREN & C. D. MOSHER.

STEAM APPARATUS. APPLICATION FILED MAR. 24. 1914.

1,171,634. Patented Feb. 15,1916.

G'SHEETS-SHEET I.

2: a 8 IIVVENTORS WITNES8E8:

THE COLUMBIA PLANOGRAPH co WASHINGTON. D. c.

Patented Feb. 15,1916.

6 SHEETS SHEET 2.

STEAM APPARATUS.

APPLICATION FILED MAR. 24, 1914.

O. P. OSTERGREN & C. D. MOSHER.

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STEAM APPARATUS, APPLICATION FILED MAR. 24, I9I4.

Patented Feb. 15,1916.

6 SHEETSSHEET 3.

$1 M; z A) 2 6 2 2 Svwemtoz;

THE COLUMBIA PLANOGRAPH co., \VARHINGTON, u. c.

0. P. OSTERG REN & C. D. MQSHER.

STEAM APPARATUS.

APPLICATION FILED MAR. 24, 191.4.

1,171,634. Patented Feb. 15, 1916.

6 SHEETS-SHEET 5.

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A TTOR/VEY 0. P. OSTERGREN & C. D. MOSHER.

STEAM APPARATUS.

APPLICATION F1LED MAR. 24, 1914.

1,171,634. Patented Feb. 15,1916.

6 SHEETS-SHEET 6.

Q7 7 a [W /v z 04 m WWI two 64 /1114 49' 744M gnmnboz THE COLUMBIA PLANOGRAPH c0 WASHINGTON, D. C.

v UNITED STATES PATENT orrrou.

OSCAR r. OSTERGREN, or BROOKLYN, AND CHARLES n. MosHnR, on NEW YORK, N. Y.

STEAM APPARATUS.

To all whom it may concern:

Be it known that we, OscAR P. Os'rnn- GREN, a subject of the King of Sweden, residing in the borough of Brooklyn, county of Kings and State of New lTork, and Cinemas D. MosrrER, a citizen'of the United States, residing in the borough of Manhattan, in the county of New York and State of New York, have invented certain new and useful Improvements in Steam Apparatus, of which the following is a specification, reference being had therein to the accompanying drawing. v

Qur invention relates to improvements in the generation and utilization of steam, and is particularly well adapted for and is illustrated in the accompanying drawings in its application to a steam power plant in which a turbine is employed.

In the accompanying drawings Figure 1 illustrates in sideelevation partly in cross section, an application of our invention as aforesaid, and Fig. 2 is a similar view illustrating a modified application of the invention. Fig. 3 is another modification illustrating an application of our 1I1VeI1l310IL' Fig. 4 is a modified form of apparatus illustrating another application of our invention, and the same applies to Fig. 5, and Figs. 6, 7 and 8 are steam diaphragms hereinafter more fully referred to.

5 indicates the furnace and 6 the tubular boiler within which the steam is generated.

8 indicates the tubular superheater separated from the boiler by thechamber 7, the

exhaust gases from the fuel passing through the tube 6 of the boiler and beyond the passage 7 through the tubes 8 of the superheater into the exhaust flue 9.

The steam generated in the boiler passes through the main 10 into "the .superheater at 11 as shown and is fed-to the turbine 13 by the main 12, passing into the interiorof' Specification of Letters latent.

Application filed March 24, 1914. Serial No. 826,864.

Patented Feb, 15, 1916.

the condenser18 is pumped out of the same through the outlet 23 by means of the pump 24 which may be driven by anysuitable means such as the motor 25, said condensed steam passing through the pipe 26 into the tubes 17 which feed the same to the injector 'or nozzle '27 from which point it passes through the end 28' of the turbine into the head 16 from which place it reenters the superheater 8 by the main 29. Any of the hot-water not converted after leaving'the nozzles 27, it will be readily understood, will drain into the lower end of the header 16 from which point it will pass down through the tube 30 to the pump 31 driven by the motor 25, and from which it is fed through the'tube 32 to the boiler where it is again converted as originally. From this it will be seen that the condensed water from the bottom of the condenser in passing through the tubes 17 takes up the heat from the same as it leaves the turbine before that condensed water comes in contact with the condenser tubes 18; thus saving that heat which would otherwise :be radiated and'lost, and the heat from the exhaust steam within the chamber 14 also combines with the water from the tubes 17 as it is jetted from the nozzle 27, except such Water as drains from the bottom of the header 16 which is again,

returned to the boiler as aforesaid, thus making it possible to preserve the latent heat which would otherwise be lost by condensation.

. In the modification shown in Fig. 2 the boiler is indicated by the reference charac ter from which point the steam passes I into the superheater 52 through the connection 51 and passes to the turbine through the connection 53, entering by the header 54 which it will be observed is connected to the header 55 by the connection 56, the header being. connected with the header 57 by the connection 58 from which point the steam passes through the turbine into the chamber 59 striking the deflectors 60 to 63 lnclusive' and passing down over the tubes 65 and be V tween'the-condenser tubes 66 into the bottom of the condenser as shown at 67. The water circulation of course it'will be'understood 1s established through the pipe 68, tubes 66 I and outlet 69 in the usual manner. The condensed steam after reaching the bottom of the condenser as indicated at 67, is taken 011' through the pipe 70 and is driven by the pump 71 hrough the pipe 72 into the top of the header at 73 from which point it drains 01f from the bottom of the header indicated by the reference character 74. and discharges over the condenser tubes 66 from which point it is again pumped through by the pump 71 as aforesaid. Some of the condensed steam acted upon by the pump 71 in passing through the pipe 72, is taken ofi' by the pipe 79 and pump 76 which feeds the header 7? through the pipe 78, and some of the condensed steam acted upon by the pump in passing through the pipe is taken off by the pump 81 which feeds the headeix82 through the pipe 83. Any surplus of condensed steam which has not been absorbed by the steam and consequently deposits in the lower portion of the header 88, will drain through the pipe 89 to the pump 87 from where it is pumped back to the boiler through the pipe 90. The steam after leaving the chamber 59 having done its work in the turbine and in passing through the right hand end of the turbine, it will be observed, encounters the condensed steam which'is pumped as aforesaid until the remaining steam emerging into the pipe 88 is highly saturated and returns to the superheater through the main 91. By this means it will be observed that the turbine may be reversed by closing the valve 92 so that the superheated steamenters through the main 91 and after passing through the turbine enters the chamber as aforesaid, passing down over the tubes 55 and 56 into the'bottom of the condenser as indicated at 67,

passes through the main 101 and acts upon the impulse wheel 102 from which point it enters the-chamber 103 and passes through the turbine 10% into the chamber 105 where, after doing its Work, the condensed steam passes down over the tubes 106 of the :p'reheater into the condenser 107 from which polnt part of the condensed. steam may be forced up by the pump 108 through the pipe 109 and out of the nozzle 110 where it mixes with the condensed steam and passes into the outlet 111 from which point it goes into the supe'rheater 112. The heat from the furnace it will of course be understood passes between the boiler tubes "and through the chamber 11.3 through the tubes of the superheater out of the stack 11%, and it will be further understood that 115 indicates a suitable safety valve uponthe'boil'er which allows any'e' xcess of steam therefrom to pass through the mains 116 and 117 into the suof a sheet. the chamber 137 from the turbine 136 in, passing throughthe opening 142 is saturated perheater as shown, and any excess pressure in the superheatcr it will also-be observed causes the safety valve 118 to operate, thus allowing the steam to enter the chamber 105 1 through the connection 119 allowing the "superheated steam to mix wlth the condensed steam so as to be returned to the superheater as aforesaid. V will be observed may be adjusted by the valve 121 so as to admit a predetermined amount of steam from the superheater to mix with the expanded steam from the boiler after the same has acted upon the impulse wheel 102. For the purpose of reversing it will of course be understood that the valve 120 may be closed and the valve 121 the turbine at 122 which previously served as a compressor.

absorbed condensed steam after leaving the jet or nozzle 110 willbe taken up through the pipe 124 and by meansof the pump 125 The valve 120 it 123-121 indicates any suitablewater circulating system. Any unmay be'opened, thus allowing steam to enter will be returned through themain 120 into the boiler 100.

Referring to Fig. 4, 127 indicates an inlet for the superheated steam whlch passesv through the passage 128 enter-in the Cl12l111- her 129 and from which point it may pass also entering the chamber where it heatsthe metal 1n contact.

The steam within the chamber 134 then passes tl'irough the turbine 136 into the chamber 137. 138 indicates the main shaftof the turbine which. it will be observed is hollow and is provided with the water pipe 189 which feeds the chamber 140 and from which the water is emitted into the chamber 137 by the nozzles 14:1 in the form The expanded steam entering with the sheet of water therein. Some of this steam is condensed and passes to the "condenser while the saturated steam enters the compressor 113. From the condenser the water passes over thesuperheadcer and 15 1'sturned'by the tube 1 1%; and ijets'or nozzles such as 1&5, so that the steain'and water are mixed in entering the compressor 113 from which point they are forced into the chamber 1 16. 111 -118 and 1 19 are concentric tubes supplyin-g water to the interior of the shaft 138 and from which the water is fed intothe chambers l50'151 and 152 respectively. As the partly saturated steam enters the chamber 146, it mixes with the water passing from the chamber 150 through the opening 153 and any su'rpluswater is taken off. by the pipe 154 through the opening 155'.

chamber 158 where it receives a further saturation from the water passing from the chamber 151 through the inlet 159 and the surplus water is also taken from the chamber 160 by the passage 161 and through the tube 162. Again the-further saturated steam passes into the chamber 163 from the compressor 164 where it is furthermixed with water from the chamber 152 entering through the passage 165 and-from which chamber 163 surplus water passes into the chamber 166 by the passage 167 and returns to the condenser in the usual way by the pipe 168. From the last mentioned chamber 163, the remaining almost completely saturated steam passes through the compressor 169 and from there passes to the superheater through the main 170 allowing any free water or condensed steam to escapefrom the passage 171 through the pipe 172, back to the boiler.

In the modification shown in Fig. 5, the superheated steam enters through the main 17 3 passing through the turbine 174 into the chamber 175, part of the superheated steam passing beyond the valve 17 6 and entering the chamber 177' as shown where it mixes in the chamber with the expanded steam from the turbine 174. From the chamber 175the steam passes into the chamber 17 8 through the'turbine 17 9, part of said steam passing into the chamber 180 through the port 181, and enters the said chamber 178 through the port 182 from the chamber 178,

" part of the steam enters the chamber 183 by uncondensed remaining steam passing into the chamber by the action of the compressor 191. 192 indicates the water inlet which it will be observed passes through the center of the shaft as shown at 1 93 where it mixes with the steam as it is whirled by the vanes 186, so that the steam entering the chamber 190 is somewhat saturated. It will also be observed that water enters the chamber 194 where it passes beyond the valve 195 which is released by centrifugal forcea'c cording to the tension of its adjustment, so that the slightly saturated steam in the chamber 190 is further saturated by the Water entering from the chamber 194. As

the steam passes throughthe compressor 196, it is further saturated-from the water within the chamber 197 and as it passes into the chamber 198 it is also further saturated from the water within the chamber 199 until finally the saturated steam passes through the main 200 allowing the condensed steam to be returned to the boiler from the drain pipe 201. i

On referring to the diagrams shown in Figs. 6,7 and 8, and with particular reference to Fig. 7, it will be observed that if the line AD represents the absolute temperature of the water in a condenser, say about 562 degrees (101 degrees F.) corresponding to 1 pound absolute pressure per square inch area and heat be added'to said water in a boiler up to the temperature of the latter, the horizontal distance C-D should be made such that the area A B- C D represents the amount of heat thus added. Now, if more heatisadded to the water along the isothermal line BE until at E all of it has been evaporated, the area B E F C should corre-fi engine performing work and it is desired that the expansion should take place without condensation in the cylinder or along the a saturation curve to G, heat would have to be added correspondingto the area E G H F. Now, if allthe latent heat in the steam is removed in the condenser at a constant temperature (101 degrees F.) along the isothermal GA we arrive back at point A and the cycle is closed. The area A B E G H D A represents all the heat thus put into the water, while the area A B E G A represent the heat convertible into work in the ordinary steam engine. Again, iffrom E the steam is led through a superheater and the temperature is raised along line EK to K and then expanded adiabatically in the engine without adding or deducting heat except through transformation into work'the temperature will fall along the vertical line K-G to G where, contingent of the location casesi'llustrate what proportion of the total heat put into the steam can be converted into work in the usual steam engine of the present day, they are set forth for the purpose of comparison in order to more thoroughly illustrate the scope and manner of improvement in our new cycle as represented by E K G'L E, Fig. 7. In this cycle we may From G the heat is removed in the con- A as before} In this assume that water is already converted into saturated steam and beginning at E we add heat as before along line E li and as before the steam is expanded in an engine adiabati cally performing work while the temperature drops along line KG to G. Now, this steam could be mechanically compressed to its original pressure on several and different thermal lines. It could either be compressed adiabatically (without adding or deducting heat when the temperature would raise along line G-K, in which case no heat would be converted into external work, as illustrated in the compression period of a common reciprocating engine diagram), or compres sion may take place during elimination of some heat 2. 6. so that the temperature increased along the saturation curve G. E up to E when the area E K G E would represent the amount of heat convertible into work fror total input as represented by the area E K H Or a certain amount of the heat may be extracted in a condenser along line G--L to L allowing the remain ing seam to be compressed and utilizing the condensated steam (water) to be introduced in the compression in the form of a spray so that it is gradually vaporized by the heat created through compression without adding or deducting heat from or to the outside. The temperature of the mixture will increase along line LE to E; all the fluid being thus restored in the form of saturated steam at its original pressure. The area E K LE represents here the proportion of heat convertible into work from a total input as represented by the area E K E E E and is the largest proportion attainable within the temperature limits 01 the cycle. Finally, a larger proportion oi the steam may be condensed than that which can be converted back to steam from the. heat evolved in the compressor as in the preceding case i. 6. along line GA to M. in this case, the temperature of all the mixture can be brought up to line B E by means of com: pression only it enough of steam is left for compression with this end in View. In any case, some of the mixture will. remain in liquid shape and must as such be converted to steam in a boiler in which heat is added. along the isothermal line from N to The proportion of heat convertible into work in this case is represented by area N K G M N from a total input proportional to area N K H G N. It will be seen that while the power of a gii'en motor (disregarding the necessary addition of boiler and extension of condenser) can be increased the thermal eliicie-ncy is gradually decreased as conditions approach those of the ordinary steam engine. in Fig. 6, E K L E represents the cycle when the original pressure of the steam is very high and as a consequence line L-G so extended that it would be impractical to superheat thesteam sufficiently in onestage (to K) that line K G would intersect the.

saturation line a G. In this case intermediate heating is resorted to i. c. from S volume diagram, Fig. 8. where line A.-B- represents a certain volume of saturated.

steam of pressure AE. This volume is increased by superheating to C from G the gas is allowed to expand adiabatically down to D while performing workin a motor,the volume has then become l -D. From D a certain portion of-this volume is condensed isothermally to From E the remaining portion EF is compressed along the saturation line EB during which process the condensate just created is absorbed by.

the steam as heretofore described. At B the cycle is closed and renewed as before. It is plain that the positive work performed by the steam in the motor is proportional to the area A C D F A and the negative work oi. the compressor to the area A B E F A;

leaving area B C D E B as net or external work.

Referring again to Fig.- 5, it will be understood that it is desirable to keep the space 186 between the turbine blades and. the compressorblades as shortas possible so that by the assistance of the guide blades between the turbine and the compressor the velocity of the steam as it leaves the turbine blades will be retained as it enters the compressor;

Of course it will be understood that various modifications may be made without de parting from the spirit of the invention as claimed.

We claim:

1. A heat engine comprising means for converting heat into work by expanding gas, means for adding heat to said expanding gas in'the engine, means for cooling said gas and compressing it to its originallpres' sure, means for lowering the temperature during said compression and means for.

raising the temperature to its original point. 2. The method of utilizing steam for power purposes consisting in generating steam from water, superheating the said In all other a steam, converting its expansive properties into energy, condensing a portion of the expanded steam into Water, and feeding the said condensate together with the unc0ndensed expanded steam back into said super-v heater, and means for heating said condensate prior to mixing the same with said uncondensed steam.

4:. The method of utilizing steam for power purposes consisting in generating steam from water, superheating the said steam, converting its expansive properties into energy, condensing a portion of the expanded steam into water, and feeding the said condensate together with the uncondensed expanding steam back into said superheater, and means for heating said-condensate prior to mixing the same with said nncondensed steam, by a portion of the heat of said condensate prior to its mixture with said nncondensed steam.

5. The method of utilizing steam for power purposes consisting in generating steam from water, superheating the said steam, converting its expansive properties into energy, condensing a portion of the expanded steam into water, and mixing said condensate with said nncondensed expanded steam and forcing the same back into said superheater. V

6. The method of utilizing steam for power purposes consisting in generating steam from water, superheating the said steam, converting its expansive properties into energy, reheating the expanded steam, and again convertlng its expansive properties into energ condensing a portion of the expanded steam into water, and feeding the said condensate together with the uncondensed expanded steam back into said superheater. v

7. The method vof utilizing steam for power purposes consisting in generating Copies of this patent may be obtained for steam from water, superheating the said steam, converting its expanslve properties into energy, reheating the expanded steam,

and again converting its expansive properthe expanded steam into water, and feeding the said condensate together with the urn condensed expanded steam, into a succession ofcompressors and thence into the superheater.

8. The method of utilizing steam for power purposes consisting in generating steam from water, superheating the said steam, converting its expansive properties into energ reheatmg the expanded steam,

and agaln converting its expansive properties into energy, condensing a portion of the expandedisteam into water, and feeding the said condensate together with the uncon-' densed expanded steam into a succession of compressors and thence into the superheater, and means for returning to the boiler any condensate not returned to the superheater.

9. The method of utilizing- 'steam' for power purposes consisting in generating steam from water, converting its expansive properties into energy, and simultaneously therewith superheating steam at a lower pressure, mixing said superheated and exties into energy, condensing a portion of panded steam, and converting the expansive properties of said mixed steam into energy, condensmg a portlon of the expanded steam into water, and feeding said condensate together with the nncondensed expanded steam back in the superheater.

10. In a steam power apparatus, a motor and a compressor, means for feeding fluid through said motor and into said compressor, and means for reversing the flow of said fluid and the action of said compressor.

In testimony whereof we hereunto afiix our signatures in the presence of twowitnesses. r

OSCAR P. OSTERGREN. CHARLES n. MosHnn;

Witnesses:

LOUISE 'ENDERLE, THOMAS A. HILL.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0. r 

